diff options
| author | Ruiling Song <ruiling.song@intel.com> | 2014-04-23 14:31:29 +0800 |
|---|---|---|
| committer | Zhigang Gong <zhigang.gong@intel.com> | 2014-04-23 13:58:27 +0800 |
| commit | 5ac76d0069ea7cf567ec4889e6b20c4252c3b424 (patch) | |
| tree | 1990e85b9e446f07cb73620de398cfaad4d64345 | |
| parent | 3af12cc7f18c345afa3219343310d0028a2dc17f (diff) | |
GBE: Try expire some register before register allocation
1. This would free unused register asap, so it becomes easy to allocate
contiguous registers.
2. We previously met many hidden register liveness issue. Let's try
to reuse the expired register early. Then I think wrong liveness may
easy to find.
Signed-off-by: Ruiling Song <ruiling.song@intel.com>
| -rw-r--r-- | backend/src/backend/gen_reg_allocation.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/backend/src/backend/gen_reg_allocation.cpp b/backend/src/backend/gen_reg_allocation.cpp index 6ae2dc7b..c45fed79 100644 --- a/backend/src/backend/gen_reg_allocation.cpp +++ b/backend/src/backend/gen_reg_allocation.cpp @@ -879,6 +879,8 @@ namespace gbe uint32_t size, uint32_t alignment) { uint32_t grfOffset; + + this->expireGRF(interval); while ((grfOffset = ctx.allocate(size, alignment)) == 0) { const bool success = this->expireGRF(interval); if (success == false) { |